25440215050 has 48 divisors (see below), whose sum is σ = 48632012352. Its totient is φ = 9895305600.

The previous prime is 25440214981. The next prime is 25440215083. The reversal of 25440215050 is 5051204452.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 609139 + ... + 649561.

It is an arithmetic number, because the mean of its divisors is an integer number (1013166924).

Almost surely, 2^25440215050 is an apocalyptic number.

25440215050 is a deficient number, since it is larger than the sum of its proper divisors (23191797302).

25440215050 is a wasteful number, since it uses less digits than its factorization.

25440215050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40783 (or 40778 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 28.

The spelling of 25440215050 in words is "twenty-five billion, four hundred forty million, two hundred fifteen thousand, fifty".